Results 1 to 10 of about 167,061 (160)

Comparison of bacterial filtration efficiency vs. particle filtration efficiency to assess the performance of non-medical face masks [PDF]

open access: yesScientific Reports, 2022
As a result of the current COVID-19 pandemic, the use of facemasks has become commonplace. The performance of medical facemasks is assessed using Bacterial Filtration Efficiency (BFE) tests. However, as BFE tests, require specific expertise and equipment
Henrietta Essie Whyte   +10 more
doaj   +6 more sources

Riboflavin based setup as an alternative method for a preliminary screening of face mask filtration efficiency [PDF]

open access: yesScientific Reports
Face masks are essential in reducing the transmission of respiratory infections and bacterial filtration efficiency, a key parameter of mask performances, requires the use of Staphylococcus aureus and specialised staff. This study aims to develop a novel
Aida Cavallo   +4 more
doaj   +2 more sources

Practical Modeling of Filter Filtration Efficiency [PDF]

open access: yesContributions to Tobacco and Nicotine Research, 1990
A simple and general mathematical model has been developed to calculate filter-filtration efficiency, which is based on practical design parameters: pressure drop, filter dimension, flow rate, and filament denier.
Kao J
doaj   +2 more sources

Filtration Efficiency of Electret Air Filters Reinforced by Titanium Dioxide

open access: yesApplied Sciences, 2020
In this study, titanium dioxide (TiO2), a mineral with a potential and supercapacitor, is used as the reinforcing material to improve the filtration efficacy of electret melt-blown fabrics.
Ching-Wen Lou   +5 more
doaj   +3 more sources

Bacterial Filtration Efficiency of Different Masks [PDF]

open access: yesStrojniški vestnik - Journal of Mechanical Engineering, 2022
Face coverings, such as surgical masks and respirators, have an important role in preventing bacterial and viral transmission, especially during a global pandemic like COVID-19. Therefore, to secure their availability, new manufacturers and the use of novel materials must be encouraged.
Košir, Tamara   +3 more
openaire   +1 more source

Ultra low-pressure filtration system for energy efficient microalgae filtration [PDF]

open access: yesHeliyon, 2021
Microalgae-based products have gained growing interest leading to an increase in large-scale cultivation. However, the high energy associated with microalgae harvesting becomes one of the bottlenecks. This study evaluated an energy-efficient microalga harvesting via ultra-low-pressure membrane (ULPM) filtration (
Wan Nur Aisyah Wan Osman   +7 more
openaire   +4 more sources

Effect of structure parameters of catalyst substrate on the performance of diesel particulate filter [PDF]

open access: yesITM Web of Conferences, 2022
The filtration efficiencies of the particulate matter and the particulate number in DPF, the no-load pressure drop of DPF, and the load pressure drop of DPF were selected as key performance parameters of DPF.
Tan Piqiang   +4 more
doaj   +1 more source

Impact of Conditioning Substances and Filtration Pressure on Dewatering Efficiency of Sewage Sludge

open access: yesEnergies, 2021
Sludge dewatering is a key element in sludge’s processing and management. Solid-phase separation, sludge volume reduction and the separation of a high-quality supernatant are the main tasks of the dewatering devices.
Tomasz Kamizela, Mariusz Kowalczyk
doaj   +1 more source

Performance of Textile Mask Materials in Varied Humidity: Filtration Efficiency, Breathability, and Quality Factor

open access: yesApplied Sciences, 2022
During the COVID-19 pandemic, reusable masks became ubiquitous; these masks were made from various fabrics without guidance from the research community or regulating agencies. Though reusable masks reduce the waste stream associated with disposable masks
Joelle M. Segovia   +5 more
doaj   +1 more source

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